Multicylinder combustion engine



Dec. 15, 1931. G. PIELsTlcK MULTI CYLINDER COMBUSTION ENGINE Filed April 15, 1929 2 shee1sshee1 1 Fig'. 1.

rauf! 454./

Dec. 15, 1931.

G. P lELsTlcK MULTICYLINDR COMBUSTION ENGINE Filed April l5, 1929 2 Sheets-Sheet 2 Patented Dec. 1 5, 1931 UNITED STATES PATENT OFFICE GUSTAV PIELSTICK, OF AUGSBURG, GERMANY, ASSIGNOR. TO MASCHINENFABRIK AUGSBURG-NRNBERG A. G., OF AUGSBURG, GERMANY, A CORPORATION OF GER- MANY MULTICYLINDER COMBUSTION ENGINE Application led April 15, 1929, Serial No.

This invention relates to multicylinder are individually attached to a longitudinal ly extending carrier.

One object of the invention is the provision of a multicylinder engine of this type in which the middle portions of the cylinders are connected toa longitudinally extending superstructure on a longitudinally extending carrier by means of tension rods or through bolts.

Other objects and advantages of the invention will be more apparent from the following description and from the accompanyingdrawings, in which- Fig. l is a cross sectional view transversely of an engine taken centrally of a cylinder. embodying the present invention;

Fig. 2 is a transverse section taken through a pair of connecting rods;

Fig. 3 is a front elevation of the engine;

Fig. 4 is a horizontal Section on the line A-B of Fig. l;

Fig. 5 is a section on the line C--D ot Fig. 2; and

Fig. 6 is a section on the line E-F of Fig. 3.

In accordance with the present invention a series of individual cylinder portions forming the intermediate portions of the cylinders of an engine is arranged above a superstructure or frame preferably integrally7 provided on a longitudinally extending carrier, these parts being firmly held together by means of clamping or tension rods which extend at right angles-to the carrier. Thecylinder portions mentioned are attached to one another in a detachable manner, and support cylinder heads in a manner permitting their removal without disturbing the clamping rods. As shown in the drawings the mul- .ticylinder internal combustion engine comprises a stationary lowerlongitudinal carrier a in which cross ribs b may be provided for the support of the bearing housings c for the crank shaft. On the longitudinal carrier a is a superstructure preferably integral therewith and embodying the upstanding supports d which are stiffened at their intermediate portions by longitudinally extending mem-v 355,174, and in Germany Aprii24, 1928.

bers or ribs e located above the longitudinal carrier a. Beneath the ribs e the supports cl are preferably of-channel shape in cross section as shown in Fig. 4. The portions of the superstructure which extend above the ribs e, namely the uprights designated d arel preferably of tubular form. Inside of the supports l and d are arranged clamping or tension rods f extending slightly beyond the upper end of cylinder portions g which rest upon the supports d. The lower ends of the rods pass through lower bearing supports m and secure them to the longitudinal carrier a as well as securing the latter to the cylinder portions g.

The cylinder portions g each constitute an intermediate portion of a working cylinder y and. as shown. the scavenging and exhaust 'passages for the two cycle Diesel type engine to which the invention is herein applied are provided in this portion. Cylinder ends g are detachably connected to these intermediate cylinder portions las by means of suitable attaching bolts a-dapted to be removed Wit-hout disturbing the clamping engagement of the through rods f. Each cylinder is thus individually connected to the superstructure and longitudinal carrier by means of the through bolts or vrods f, the cylinders being arranged side by side and detachably fastened one to another by means of bolts o r the like extending through cross plates h providedpreferably integrally with each cylinder portion g as shown in Fig. 6. These cross plates t are so formed that adjacent` plates surround the clamping rods f at their upper ends. The series of connected individual cylinder portions g provides a rigid structure which is rigidly connected by means of the through bolts to the longitudinal carrier, thus providing a rigid engine assembly. It will be apparent that the various parts yforming this assembly are readily intercon-- nected by simple attaching means to provide a rigid yet light construction, this con-` struction permitting the removal of the cylinder ends g without disturbing the connection of the cylinder portions g to the carrier and to one another. The construct-ion described also provides for the .addition of other cylinders and for their ready replacement or removal.

Between the two adj accnt members f there is a track j for the cross head k of the engine, the front portion of the superstructure section being covered by aremovable plate Z, the various cross heads corresponding to the various cylinders being similarly enclosed. Below the longitudinal carrier a is the usual lower crank case portion m as shown in F ig. 1, this portion being detachably fastened at its edges to a lower side of the longitudinal carrier.

While the form of apparatus herein described constitutes a preferred embodiment of the invention, it is to be understood that the invention is not limited to this precise form of apparatus, and that changes may be made therein Without departing from the scope of the invention which is deiined in the appended claims.

What is claimed is:

1. A multicylinder combustion engine comprising a longitudinally extending 4carrier having a longitudinally extending superstructure integral therewith, said superstructure including a longitudinally extending rigidifying member above said carrier and connections extending from said member to said carrier, a series of individual piston guiding cylinder portions open at opposite ends and resting on said superstructure above said member, a series of tension rods extending through said cylinder portions, superstructure, and supporting carrier, and securing said cylinder portions to said carrier, cylinder heads removably attached to said cylinder portions independently of said rods, said cylinder portions having opposite cross plates abutting cross plates of adjacent cylinder portions and enclosing said rods, and means Iremovably securing adjacent cross plates together. A

2. A multicylinder combustion engine comprising a longitudinally extending carrier having a longitudinally extending superstructure, a series of individual piston guiding cylinder portions open at opposite ends and each forming only a part of the cylinders of the engine, said cylinder portions resting on said superstructure, a series of tension rods extending from said superstructure transversely thereof securing said cylinder portions thereto, means for removably serier having a longitudinally extending structure, a serles of piston guiding cylinder portions open at opposite ends and forming only the middle parts of the cylinders of the engine, said cylinder portions resting on said superstructure, fastening means securing said cylinder portions to the superstructure,

signature.

GUSTAV vPIELSTICK.

curing the cylinder portions directly to an adjacent cylinder portion, and a cylinder head pieceremovably secured to each of said cylinder portions independentlyof said tension rods and adapted to be removed with- -out disturbing the connection between the tension rods and the cylinder portions, each cylinder head piece having a piston guiding part forming a portion of the engine cylinder.

3. A multicylinder combustion engine :comprising: ai'longitudinally7 extending car- 

